Outline ![]()
Files ![]()
loading...
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
/**************************************************************************/
/* */
/* Copyright (c) Microsoft Corporation. All rights reserved. */
/* */
/* This software is licensed under the Microsoft Software License */
/* Terms for Microsoft Azure RTOS. Full text of the license can be */
/* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */
/* and in the root directory of this software. */
/* */
/**************************************************************************/
/**************************************************************************/
/**************************************************************************/
/** */
/** USBX Component */
/** */
/** Device Stack */
/** */
/**************************************************************************/
/**************************************************************************/
#define UX_SOURCE_CODE
/* Include necessary system files. */
#include "ux_api.h"
#include "ux_device_stack.h"
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _ux_device_stack_uninitialize PORTABLE C */
/* 6.1.10 */
/* AUTHOR */
/* */
/* Chaoqiong Xiao, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function uninitializes the generic portion of the device side */
/* of USBX. */
/* */
/* INPUT */
/* */
/* OUTPUT */
/* */
/* Completion Status */
/* */
/* CALLS */
/* */
/* _ux_utility_memory_free Free */
/* _ux_utility_semaphore_delete Delete semaphore */
/* */
/* CALLED BY */
/* */
/* Application */
/* */
/* RELEASE HISTORY */
/* */
/* DATE NAME DESCRIPTION */
/* */
/* 05-19-2020 Chaoqiong Xiao Initial Version 6.0 */
/* 09-30-2020 Chaoqiong Xiao Modified comment(s), */
/* resulting in version 6.1 */
/* 04-02-2021 Chaoqiong Xiao Modified comment(s), */
/* fixed uninitialize in case */
/* there is no EP except EP0, */
/* resulting in version 6.1.6 */
/* 01-31-2022 Chaoqiong Xiao Modified comment(s), */
/* added standalone support, */
/* resulting in version 6.1.10 */
/* */
/**************************************************************************/
UINT _ux_device_stack_uninitialize(VOID)
{
UX_SLAVE_DEVICE *device;
UX_SLAVE_ENDPOINT *endpoints_pool;
UX_SLAVE_TRANSFER *transfer_request;
ULONG endpoints_found;
/* If trace is enabled, insert this event into the trace buffer. */
UX_TRACE_IN_LINE_INSERT(UX_TRACE_DEVICE_STACK_INITIALIZE, 0, 0, 0, 0, UX_TRACE_DEVICE_STACK_EVENTS, 0, 0)
/* Get the pointer to the device. */
device = &_ux_system_slave -> ux_system_slave_device;
/* Free class memory. */
_ux_utility_memory_free(_ux_system_slave -> ux_system_slave_class_array);
/* Allocate some memory for the Control Endpoint. First get the address of the transfer request for the
control endpoint. */
transfer_request = &device -> ux_slave_device_control_endpoint.ux_slave_endpoint_transfer_request;
/* Free memory for the control endpoint buffer. */
_ux_utility_memory_free(transfer_request -> ux_slave_transfer_request_data_pointer);
/* Get the number of endpoints found in the device framework. */
endpoints_found = device -> ux_slave_device_endpoints_pool_number;
/* Get the endpoint pool address in the device container. */
endpoints_pool = device -> ux_slave_device_endpoints_pool;
/* Parse all endpoints and fee memory and semaphore. */
while (endpoints_found-- != 0)
{
/* Free the memory for endpoint data pointer. */
_ux_utility_memory_free(endpoints_pool -> ux_slave_endpoint_transfer_request.ux_slave_transfer_request_data_pointer);
/* Remove the TX semaphore for the endpoint. */
_ux_device_semaphore_delete(&endpoints_pool -> ux_slave_endpoint_transfer_request.ux_slave_transfer_request_semaphore);
/* Next endpoint. */
endpoints_pool++;
}
/* Free the endpoint pool address in the device container. */
if (device -> ux_slave_device_endpoints_pool)
_ux_utility_memory_free(device -> ux_slave_device_endpoints_pool);
/* Free memory for interface pool. */
_ux_utility_memory_free(device -> ux_slave_device_interfaces_pool);
/* Return successful completion. */
return(UX_SUCCESS);
}